Tape-applying attachment for fastener-setting machines and method of severing bias tape



M y 7, 9- H. A. EVANS ET AL 1, 11.56]

-' TAPE APPLYING ATTACHMENT FOR FASTENER SETTING MACHINES AND METHOD OF SEVERING BIAS TAPE Original Filed April 9, 1924 2 Sheets-Sheet 1 fwwaami Jew-02d a. 2 4/0029,

i I X 62mm? iflfwgucs.

50% I I a 27 4 A CEMENT FOR FASTENER' SETTING HOD OF SEVERING BIAS TAPE.

1. A T E S N ,A V E ..AT Amm n w Y H Pm m E um T May 7,

Filed April 9, 1924 2 Sheets-Sheet jaw 222023 i. -flar02c2 $.fi5rana, w "5" 6 0036 MHZ/02.2w

Patented May 7, 1929.

"UNITED sr rs PArs'r mar.

HAROLD A. EvAr s, on LYNN, Ann enonen w. JAoanns, or new nnnronn mnssnonnsnrrs, nssionons TO Airline TACK. CORPORATION, or FAIRHAVEN; MASSA- cnosnrrs, A oonronnrron or NEW-YORK. p

TAPE-APPLYING ATTACHMENT FASTENER SETTILNG MACHINES AND METHOD OF BEVERING- BIAS TAPE.

Original application filed April 9, 1924, Serial No. 705,239. Divided and this application filed-January This invention relates to an attachment for fastener setting machines, more particularly for those constructed to set barrel fasteners such as -rivets,'eyelets or lacing hooks, and by which a tape is fed to the setting mechanism to be fixed by the fasteners to the Work thus to reinforce the work along the line of the fasteners. This invention relates to the attachment per se and is to subject matter divided out from our application for patent, Serial No. 705,239, filed from the remainder oi the strip by merely,

pulling the'refrom. Provision is therefore made by which at the completion o'f'the" setting of each series oi fasteners the tape is slit to define a transversely weakened break line for a succeeding length of tape to be fixed by the setting of a succeeding series or row of fasteners, the distance between successive slits being adjustable to provide for different spacing and number 01 fasteners in each row. o

For a more complete understanding of this invention reference may be had to the accompanying drawings in which Figure 1 is a fragmentary front elevation a lacing hook setting machine showing the tape guiding and slitting mechanism in position thereon.

Figure 2 is a perspective showing this mechanism and its actuator, the presser toot being omitted.

Figure 3' is a perspective partly broken away and. parts separated ofthe same mechanism.

Figure 4 is fragmentary side elevation eiithe machine. showing the stasis control,

Serial No. 249,356.

Figure 5 is a side'elevation of the tape handling mechanism.

Figure 6is a rear elevation of the same.

Figure 7 is a section on'line 77 of Figure 5.'

Figure 8 is a fragmentary view of the shoe upper showing the tape and hooks applied, the facing strip being partly detached.

Figure 9 shows in plan a piece of bias tape showing the manner in Which. it is slit and a section fixed to work detached therer from.

Referring to Figures 1 and 4, at 1 is indicated a machine pedestal which as shown is supported on a bench or table 2, this pedestal having a forwardly extending bracket 3 thereon to which is fixed a work table 4. Cooperating with the upper face or the work table (Figure 1) is a presser foot 5 fixed to a presser foot lifter rod 6 guided for vertical movement through an opening in the bracket 3,'the' presser foot normally being urged downwardly against work on the work table 4 by means of a compression spring 7 surrounding the lifter rod 6 and bearing at, its upper end against the bracket 8 and engaging the collar 7 fixed to the rod 6 at its lower end. At 8 is indicated a-punc'h and set holder carried by a slide 9 movable so that the punch may form a hole in the work supported on the work table a whensubsta'ntially in the dotted line position shown in Figure 1, and then carry the work into the full line position shown in Figure 1 in alinement with a hook-presenting and setting mechanism indicated generally at 10. This mechanism is of any usual construction and is well knownin the art so that further detail showing is unnecessary.

At 15 (Figures 1, 2, 5 and 6) is shown a support carried by the machine frame, this support having a T slot 16 cut in its lower face asshown'best in Figures 2 and 6. "Within this T slot is slidable a correspondingly shaped member 17 carried. at the upper end of a block 18. This block 18 is carrieris a thin bladed knife 22 which projects downwardly past the corresponding face of the block 18, this knife being fixed to the carrier as by means of a screw 23. On the other side of the carrier 21 is fixed a clamping plate 24 for a purpose which will later appear. The lower face of the block 18 is provided witn a slot 25 through which a tape 26 may be passed to be presented superposed on the work to the fastener setting mechanism. A cover plate 27 fixed to the lower face of the block 18 acts to hold the tape in position in the slot. A plate 28 having a slot 29 in one 1 ace through which the knife 22 may pass and a slot 30 through which the tape may be threaded is made fast to the face 31 of the block by means of screws 32. The knife is thus enclosed, the block and plate acting as a die and supporting the tape on both sides adjacent to the cutting line. The carrier 21 is normally held in elevated position by means of a spring 35 reactir between the lower face of the portion 20 of the carrier and the upper face of the block 18 between the posts 19. Above the carrier 21 1S pivoted on the screw 1O a lever 11, one end of which engages the upper face of the block 21 and the other end 42 of which extends laterally from the block 18 in position to be contacted by the outer end of a plate 44 carried at the upper end of the presser foot lifter rod 6. By raising this presser foot lifter the lever 11 is rocked to depress the carrier 21, causing the knife 22 to be projected downwardly and cut a slit through the taoe, th knife being narrower than the slot 25 and positioned centrally thereof so that an uncut margin, as shownat 50 in Figure 9,

is left at the ends of each slot 51 formed by the knife. Vt hen the knife 22 is in projected position, having effected the slitting of the tape, the plate 2 clamps the tape against the upper edge of the cover plate 27 for a purpose which will later appear.

The block 18 for the slitting and clamping mechanism is adjustable along the support 15 and in order to hold it in adjusted position a locking finger 55 may be tired to one face thereof as by means of a screw 56, this finger engaging over the upper face of the support 15 and having a V shaped projection 57 on its lower face engageable selectively in any of a plurality of notches 58 in the upper face of the support 15.

The presser foot lifter may be actuated in time with the starting and stopping of the machine. For this purpose a lever 60 pivoted at 61 to the machine frame has one arm 62 engageable with the lower end of the presser foot lifter rod 6. To the other end of this arm 63 is attached a chain 6 1 fastened to the heel end of a foot treadle 65 (see Figure 4). To the toe end of this treadle is fixed a chain 66, the upper end of which is attached. to a controller rod 67 for the starting and stopping mechanism. This mechanism may be of any suitable construction, but as hereinbefore shown is of the well known pin type inwhieh the upper end of the controlling red I 6'? has an abutment member 68 which may be raised into the path of motion of a stop lug 69 of the clutch or depressed out of contact therewith.

When the abutment 68 is out of the path of the lug, theclutch is connected for operation of the machine, but when then-butinent 68 is allowed to raise, as soon as the clutch lug 69- contacts therewith, its rotation is stopped thercby'and the clutch. is disconnected.

A tape, preferably a bias tape, is threaded through the slots 30 and 25 the guide block 18 while the knife and clamp carrier is in retracted position and the end of the tape is brought through a slot in a guide 33 movable with the punch carrier over the work table to an extent surlicient to be engaged and punched when the machine is started.

The presser foot is then raised by depressing the heel of the treadle to permit work to be inserted thereunder, thus causing the car rier to descend and cut a slit through the tape and to clamp the tape between this slit and the fastener setting mechanism. The toe of the treadle is then depressed, permitting the presser foot to clamp the work in position and permitting the spring 35 to retract the knife and clamping plate from the tape. Sufficient depression of the toe of the treadle acts to start the machine, where upon th pi'inching device is moved from its last setting position over the end of the tape 'which is punched thereby as the punch descends to form a hole in the work. The punch then moves by engagement with thetape and the work, feeding both together to the setting position where a hook is presented to the hole and set through both the work and the tape. ihe punchthen rises and retracts and forms a succeeding hole through both the tape and the work in which the next hook 'is set in like manner, this continuing until the desired number of hooks in the series having been set through both the tape and the work. The tape being a bias tape permits the fasteners to be set in other than a straight line, the tape being conformed in continuous flat condition to the configuration thereof as fed without requiring any slit-ting of the tape between the successive fasteners, this being shown clearly in Figure 8.

When the desired number of fasteners has been set the operator depresses the heel end of the treadle causing the machine to stop nd the presser foot to be raised to release t is work.- This causes the knife and clamping plate to be brought down, the knife acting to slitthe tape at a distance spaced from the slit first out sufiicient to define a section of tape of a length suitable for setting the desired number of fasteners in a succeeding series, the slitting and clamping mechanism being adjustable along the support 15 to provide for different numbers of fasteners to be set and variations in the spacing thereof.

After the presser foot has been raised the work may be removed from the machine and by a quick pull thereon the tape section fixed to the work by theseries of fasteners set therein may be detached from the remainder of the strip of tape at the slit first made by the knife which is now between the clamping mechanism'and the setting mechanism and leaving the forward,

end of the succeeding length projecting through the guide 38 in position to be engaged and punched on a succeeding'actuation of the machine. The clamping plate 24 bearing on the tape between the knife and the setting mechanism prevents the break from occurring at the knife. This is clearly shown in Figure 9, the tape section attached to the work W parting from the remainder of the tape strip at a, while being clamped at the line b and newly slit at 51.

here bias tape is employed not only is it possible to conform the tape to the configuration of the line of fasteners,but it also renders easy the detachment of a section made fast to the work at the slit, it only being necessary to, disengage the interwoven portions of the uncut threads which cross the line of severance at the narrow uncut margins 50 as shown more clearly in Figure 9, it being unnecessary to break any threads in this operation.

A succeeding piece of work may then be: placed beneath the presser foot 111 posltion for the punch to punch the tape and the work and, then feed the two to setting position to successively set the desired series of fasteners therein whereupon on stopping the machine and raising the presscr foot as just described the next section of tape at tached to the work may be detached at the adjacent slit 51, a slit defining the rear end of the succeeding section being made when the presser foot is raised.

Having thus described an embodiment of this invention it should be evident to those skilled in the art that various changes and modifications may be made therein without departing from its spirit or scopeas defined by the appended claims.

WVe claim:

1. A tape guiding attachment for fastener setting machines comprising a guide block' having a slideway and a slot through which a tape may pass, a carrier slidable in said way toward and from said slot, a knife on said carrier projectable to cut a slit through a tape in said slot on sliding of said carrier in one direction, and a clamping member on said carrier engaging the tape at one side of the slit when said knife is in projected position.

2. A'tape guiding attachment for fastener setting machines comprisinga guide block having a slideway and a slot through which a tape may pass, a carrier slidable in said way toward and from said slot, a knife on said carrier projectable to cut a slit through a tape in said sloton sliding of said carrier in one direction, a clamping member on said carrier engaging the tape at one side of the slit-when said knife is in projected position, means normally urging said carrier to knife-retracted position, and means for moving said carrier to knife-pro jected position.

3. A device of the class described comprising a guide block having a slideway and a slot through which said tape may pass toward and from said slot, a carrier slidable in said slideway toward and from said slot, a tape weakening member and a tape clamping membereach carried by said carrier,'a lever engageable with said carrier, and

means for rocking said lever to move said carrier to effect weakening and clamping of said tape.

4E. The step in the method of severing bias tape, which comprises cutting the intermediate threads of the tape crossing the desired line of severance by a single transverse cut terminating at points spaced inwardly from but adjacent to the unweakened edges of the tape, whereby the severance of thetape may be completed by a pull which disengages the interwoven portions of the uncut threads at the line of severance without breaking any of said uncut threads.

5. The method of separating bias tape, which comprises cutting the intermediate threads ofthe tape crossing the desired line of severance by a single transverse out terminating at points t-spaced inwardly from the unweakened edge portions of the tape, and completing the severance by .a pull which disengages the interwoven portions of the uncut threads at the line of severance signatures.

HAROLD A. EVANS. GEORGE w. JACQUES. 

